CFLib.org – Common Function Library Project

Description:
Generates an (IPv4) Internet Protocol dotted address (aaa.bbb.ccc.ddd) from the proper address representation. Returns 0 if error occurs.

Return Values:
Returns the IP as a string.

Example:

long2ip(3401190660) = 202.186.13.4

Parameters:

Full UDF Source:

<cfscript>
/**
 * Generates an (IPv4) Internet Protocol dotted address (aaa.bbb.ccc.ddd) from the proper address representation.
 * 
 * @param longip 	 Numeric version of IP address. (Required)
 * @return Returns the IP as a string. 
 * @author Troy Pullis (&#116;&#112;&#117;&#108;&#108;&#105;&#115;&#64;&#121;&#97;&#104;&#111;&#111;&#46;&#99;&#111;&#109;) 
 * @version 0, January 9, 2009 
 */
function long2ip(longip) {
	var ip = "";
	var i = "";
    if (longip < 0 || longip > 4294967295) 
		return 0;
    for (i=3;i>=0;i--) {
        ip = ip & int(longip / 256^i);
        longip = longip - int(longip / 256^i) * 256^i;
        if (i>0) 
			ip = ip & ".";
    }
    return ip;
}
</cfscript>